diff --git a/package-lock.json b/package-lock.json
index 82a4fcb..6c26ffc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -149,6 +149,76 @@
             "source-map": "0.7.3"
           }
         },
+        "@babel/core": {
+          "version": "7.7.7",
+          "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/@babel/core/-/core-7.7.7.tgz",
+          "integrity": "sha512-jlSjuj/7z138NLZALxVgrx13AOtqip42ATZP7+kYl53GvDV6+4dCek1mVUo8z8c8Xnw/mx2q3d9HWh3griuesQ==",
+          "dev": true,
+          "requires": {
+            "@babel/code-frame": "^7.5.5",
+            "@babel/generator": "^7.7.7",
+            "@babel/helpers": "^7.7.4",
+            "@babel/parser": "^7.7.7",
+            "@babel/template": "^7.7.4",
+            "@babel/traverse": "^7.7.4",
+            "@babel/types": "^7.7.4",
+            "convert-source-map": "^1.7.0",
+            "debug": "^4.1.0",
+            "json5": "^2.1.0",
+            "lodash": "^4.17.13",
+            "resolve": "^1.3.2",
+            "semver": "^5.4.1",
+            "source-map": "^0.5.0"
+          },
+          "dependencies": {
+            "semver": {
+              "version": "5.7.1",
+              "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/semver/-/semver-5.7.1.tgz",
+              "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
+              "dev": true
+            },
+            "source-map": {
+              "version": "0.5.7",
+              "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/source-map/-/source-map-0.5.7.tgz",
+              "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+              "dev": true
+            }
+          }
+        },
+        "babel-loader": {
+          "version": "8.0.6",
+          "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/babel-loader/-/babel-loader-8.0.6.tgz",
+          "integrity": "sha512-4BmWKtBOBm13uoUwd08UwjZlaw3O9GWf456R9j+5YykFZ6LUIjIKLc0zEZf+hauxPOJs96C8k6FvYD09vWzhYw==",
+          "dev": true,
+          "requires": {
+            "find-cache-dir": "^2.0.0",
+            "loader-utils": "^1.0.2",
+            "mkdirp": "^0.5.1",
+            "pify": "^4.0.1"
+          },
+          "dependencies": {
+            "find-cache-dir": {
+              "version": "2.1.0",
+              "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/find-cache-dir/-/find-cache-dir-2.1.0.tgz",
+              "integrity": "sha512-Tq6PixE0w/VMFfCgbONnkiQIVol/JJL7nRMi20fqzA4NRs9AfeqMGeRdPi3wIhYkxjeBaWh2rxwapn5Tu3IqOQ==",
+              "dev": true,
+              "requires": {
+                "commondir": "^1.0.1",
+                "make-dir": "^2.0.0",
+                "pkg-dir": "^3.0.0"
+              }
+            }
+          }
+        },
+        "json5": {
+          "version": "2.1.3",
+          "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/json5/-/json5-2.1.3.tgz",
+          "integrity": "sha512-KXPvOm8K9IJKFM0bmdn8QXh7udDh1g/giieX0NLCaMnb4hEiVFqnop2ImTXCc5e0/oHz3LTqmHGtExn5hfMkOA==",
+          "dev": true,
+          "requires": {
+            "minimist": "^1.2.5"
+          }
+        },
         "parse5": {
           "version": "4.0.0",
           "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/parse5/-/parse5-4.0.0.tgz",
@@ -615,31 +685,64 @@
       }
     },
     "@babel/core": {
-      "version": "7.7.7",
-      "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/@babel/core/-/core-7.7.7.tgz",
-      "integrity": "sha512-jlSjuj/7z138NLZALxVgrx13AOtqip42ATZP7+kYl53GvDV6+4dCek1mVUo8z8c8Xnw/mx2q3d9HWh3griuesQ==",
+      "version": "7.9.0",
+      "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/@babel/core/-/core-7.9.0.tgz",
+      "integrity": "sha512-kWc7L0fw1xwvI0zi8OKVBuxRVefwGOrKSQMvrQ3dW+bIIavBY3/NpXmpjMy7bQnLgwgzWQZ8TlM57YHpHNHz4w==",
       "dev": true,
       "requires": {
-        "@babel/code-frame": "^7.5.5",
-        "@babel/generator": "^7.7.7",
-        "@babel/helpers": "^7.7.4",
-        "@babel/parser": "^7.7.7",
-        "@babel/template": "^7.7.4",
-        "@babel/traverse": "^7.7.4",
-        "@babel/types": "^7.7.4",
+        "@babel/code-frame": "^7.8.3",
+        "@babel/generator": "^7.9.0",
+        "@babel/helper-module-transforms": "^7.9.0",
+        "@babel/helpers": "^7.9.0",
+        "@babel/parser": "^7.9.0",
+        "@babel/template": "^7.8.6",
+        "@babel/traverse": "^7.9.0",
+        "@babel/types": "^7.9.0",
         "convert-source-map": "^1.7.0",
         "debug": "^4.1.0",
-        "json5": "^2.1.0",
+        "gensync": "^1.0.0-beta.1",
+        "json5": "^2.1.2",
         "lodash": "^4.17.13",
         "resolve": "^1.3.2",
         "semver": "^5.4.1",
         "source-map": "^0.5.0"
       },
       "dependencies": {
+        "@babel/generator": {
+          "version": "7.9.5",
+          "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/@babel/generator/-/generator-7.9.5.tgz",
+          "integrity": "sha512-GbNIxVB3ZJe3tLeDm1HSn2AhuD/mVcyLDpgtLXa5tplmWrJdF/elxB56XNqCuD6szyNkDi6wuoKXln3QeBmCHQ==",
+          "dev": true,
+          "requires": {
+            "@babel/types": "^7.9.5",
+            "jsesc": "^2.5.1",
+            "lodash": "^4.17.13",
+            "source-map": "^0.5.0"
+          },
+          "dependencies": {
+            "@babel/types": {
+              "version": "7.9.5",
+              "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/@babel/types/-/types-7.9.5.tgz",
+              "integrity": "sha512-XjnvNqenk818r5zMaba+sLQjnbda31UfUURv3ei0qPQw4u+j2jMyJ5b11y8ZHYTRSI3NnInQkkkRT4fLqqPdHg==",
+              "dev": true,
+              "requires": {
+                "@babel/helper-validator-identifier": "^7.9.5",
+                "lodash": "^4.17.13",
+                "to-fast-properties": "^2.0.0"
+              }
+            }
+          }
+        },
+        "@babel/helper-validator-identifier": {
+          "version": "7.9.5",
+          "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/@babel/helper-validator-identifier/-/helper-validator-identifier-7.9.5.tgz",
+          "integrity": "sha512-/8arLKUFq882w4tWGj9JYzRpAlZgiWUJ+dtteNTDqrRBz9Iguck9Rn3ykuBDoUwh2TO4tSAJlrxDUOXWklJe4g==",
+          "dev": true
+        },
         "json5": {
-          "version": "2.1.2",
-          "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/json5/-/json5-2.1.2.tgz",
-          "integrity": "sha512-MoUOQ4WdiN3yxhm7NEVJSJrieAo5hNSLQ5sj05OTRHPL9HOBy8u4Bu88jsC1jvqAdN+E1bJmsUcZH+1HQxliqQ==",
+          "version": "2.1.3",
+          "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/json5/-/json5-2.1.3.tgz",
+          "integrity": "sha512-KXPvOm8K9IJKFM0bmdn8QXh7udDh1g/giieX0NLCaMnb4hEiVFqnop2ImTXCc5e0/oHz3LTqmHGtExn5hfMkOA==",
           "dev": true,
           "requires": {
             "minimist": "^1.2.5"
@@ -2704,31 +2807,6 @@
         "ast-types-flow": "0.0.7"
       }
     },
-    "babel-loader": {
-      "version": "8.0.6",
-      "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/babel-loader/-/babel-loader-8.0.6.tgz",
-      "integrity": "sha512-4BmWKtBOBm13uoUwd08UwjZlaw3O9GWf456R9j+5YykFZ6LUIjIKLc0zEZf+hauxPOJs96C8k6FvYD09vWzhYw==",
-      "dev": true,
-      "requires": {
-        "find-cache-dir": "^2.0.0",
-        "loader-utils": "^1.0.2",
-        "mkdirp": "^0.5.1",
-        "pify": "^4.0.1"
-      },
-      "dependencies": {
-        "find-cache-dir": {
-          "version": "2.1.0",
-          "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/find-cache-dir/-/find-cache-dir-2.1.0.tgz",
-          "integrity": "sha512-Tq6PixE0w/VMFfCgbONnkiQIVol/JJL7nRMi20fqzA4NRs9AfeqMGeRdPi3wIhYkxjeBaWh2rxwapn5Tu3IqOQ==",
-          "dev": true,
-          "requires": {
-            "commondir": "^1.0.1",
-            "make-dir": "^2.0.0",
-            "pkg-dir": "^3.0.0"
-          }
-        }
-      }
-    },
     "babel-plugin-dynamic-import-node": {
       "version": "2.3.0",
       "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/babel-plugin-dynamic-import-node/-/babel-plugin-dynamic-import-node-2.3.0.tgz",
@@ -5688,6 +5766,12 @@
       "integrity": "sha512-KGDOARWVga7+rnB3z9Sd2Letx515owfk0hSxHGuqjANb1M+x2bGZGqHLiozPsYMdM2OubeMni/Hpwmjq6qIUhA==",
       "dev": true
     },
+    "gensync": {
+      "version": "1.0.0-beta.1",
+      "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/gensync/-/gensync-1.0.0-beta.1.tgz",
+      "integrity": "sha512-r8EC6NO1sngH/zdD9fiRDLdcgnbayXah+mLgManTaIZJqEC1MZstmnox8KpnI2/fxQwrp5OpCOYWLp4rBl4Jcg==",
+      "dev": true
+    },
     "get-caller-file": {
       "version": "1.0.3",
       "resolved": "http://10.81.13.221:8081/nexus/repository/npm-all/get-caller-file/-/get-caller-file-1.0.3.tgz",
diff --git a/src/app/layouts/components/default.layout.component.html b/src/app/layouts/components/default.layout.component.html
index 2615bc8..f3a7cc4 100644
--- a/src/app/layouts/components/default.layout.component.html
+++ b/src/app/layouts/components/default.layout.component.html
@@ -92,6 +92,28 @@
           </div>
         </ng-template>
       </mat-tab>
+
+      <mat-tab>
+        <ng-template mat-tab-label>
+          <div class="icon-item">
+            <svg
+              xmlns="http://www.w3.org/2000/svg"
+              width="30"
+              height="30"
+              viewBox="0 0 24 24"
+              fill="none"
+              stroke="#000000"
+              stroke-width="1.5"
+              stroke-linecap="butt"
+              stroke-linejoin="bevel"
+            >
+              <polygon
+                points="21.368 12.001 3 21.609 3 14 11 12 3 9.794 3 2.394"
+              />
+            </svg>
+          </div>
+        </ng-template>
+      </mat-tab>
     </mat-tab-group>
   </div>
   <div class="content-container" fxFlexFill>
diff --git a/src/app/layouts/components/default.layout.component.ts b/src/app/layouts/components/default.layout.component.ts
index eeb9001..cb6138d 100644
--- a/src/app/layouts/components/default.layout.component.ts
+++ b/src/app/layouts/components/default.layout.component.ts
@@ -59,6 +59,13 @@ export class DefaultLayoutComponent implements OnInit, OnDestroy {
   }
 
   onSelectedTabChange(event: MatTabChangeEvent) {
+    if (4 === event.index) {
+      this.router.navigate(
+        ['group', { outlets: { content: 'chat/index' } }],
+        {}
+      );
+      return;
+    }
     this.router.navigate([
       NAVS[event.index],
       { outlets: { content: 'index' } }
diff --git a/tsconfig.app.json b/tsconfig.app.json
index f758d98..29f5f58 100644
--- a/tsconfig.app.json
+++ b/tsconfig.app.json
@@ -4,11 +4,6 @@
     "outDir": "./out-tsc/app",
     "types": []
   },
-  "files": [
-    "src/main.ts",
-    "src/polyfills.ts"
-  ],
-  "include": [
-    "src/**/*.d.ts"
-  ]
+  "files": ["src/main.ts", "src/polyfills.ts"],
+  "include": ["src/**/*.d.ts"]
 }